Support in Alaska (2026)

Comprehensive guide to child support and alimony laws in Alaska. Filing fees, requirements, timelines, and how to find a Alaska family law attorney.

Created to help people understand child support and alimony laws in plain language. Laws and procedures vary by state.

This page is for informational purposes only and does not constitute legal advice. For advice specific to your situation, consult a licensed attorney in your state.

Verified against Alaska statutes Last fact-checked: 2026-03-01 Our methodology

Quick Answer

Alaska uses the percentage of income model for calculating child support. The state recognizes 5 types of alimony. Modifications require showing a material change in circumstances warranting modification; under civil rule 90.3(h), a 15% or greater change in the calculated support amount creates a presumption that a material change has occurred.

Alaska at a Glance

Child Support Model
Percentage Of Income
Alimony Types
5 types
Modification Standard
Material change in circumstances warranting modification; under Civil Rule 90.3(h), a 15% or greater change in the calculated support amount creates a presumption that a material change has occurred

How Alaska Compares

See how Alaska stacks up against nearby states on key support factors.

AlaskaWashingtonHawaii
Support ModelPercentage Of IncomeIncome SharesMelson Formula
Alimony Types5 types4 types4 types
Modification StandardMaterial change in circumstances warranting modification; under Civil Rule 90.3(h), a 15% or greater change in the calculated support amount creates a presumption that a material change has occurredSubstantial change of circumstances; child support may be modified if the current order differs by 25% or more from the updated guidelines amountMaterial change of circumstances since the prior order; the change must be substantial and not contemplated at the time of the original order

The Permanent Fund Dividend and Child Support

One of the most distinctive aspects of Alaska’s child support system is its treatment of the Permanent Fund Dividend (PFD). Alaska is the only state that distributes an annual dividend to residents from investment earnings on the state’s oil wealth. Under Civil Rule 90.3, the PFD is included in the definition of gross income for child support calculations. This means that a parent’s PFD — typically ranging from $1,000 to $3,000 per year — increases their calculated income and can affect the support amount.

Additionally, the Child Support Services Division (CSSD) may garnish a parent’s PFD to satisfy child support arrearages. This makes the PFD both a factor in calculating support and an enforcement tool for collecting unpaid obligations — a mechanism that exists only in Alaska.

How Alaska Calculates Child Support

Alaska determines child support obligations under Civil Rule 90.3, which uses a percentage-of-income formula. The calculation begins with the non-custodial parent’s adjusted annual income. Gross income includes earnings from all sources — wages, salaries, commissions, bonuses, self-employment income, dividends, interest, rental income, Permanent Fund Dividends, Social Security benefits, workers’ compensation, and other recurring income.

Deductions are applied for federal and state income taxes, FICA taxes, mandatory retirement contributions, union dues, child support for prior children, and the cost of health insurance for the child. The resulting adjusted income is then multiplied by a percentage based on the number of children: 20% for one child, 27% for two children, and 33% for three children, with additional percentages for more children.

For a broader overview of how support calculations work, see our guide on how child support is calculated. You can also estimate your potential obligation using our child support calculator.

Adjustments for Shared Custody

When the non-custodial parent has the child for more than 30% of overnights in a year (approximately 110 nights), Rule 90.3 provides a shared custody adjustment. Under this formula, each parent’s theoretical support obligation is calculated, and the parent with the higher obligation pays the net difference to the other parent. This adjustment recognizes that both households incur direct child-related expenses during their respective periods of care.

The 30% threshold is significant because it determines whether the standard formula or the shared custody formula applies. Parents who are close to the 30% threshold should understand that small changes in the overnight schedule can meaningfully affect the support calculation.

Deviation from Guidelines

The Rule 90.3 amount is presumptively correct, but the court may deviate if the calculated amount is manifestly unjust. Recognized deviation factors include:

  • Especially large prior support obligations for other children
  • Unusually high or low income of the obligor or obligee
  • The prior earning history of a parent who is voluntarily and unreasonably unemployed or underemployed
  • The child’s health or educational needs
  • The extent to which the custodial parent’s income is affected by the obligation to care for the child
  • Tax consequences
  • Shared custody arrangements
  • Other relevant circumstances

When the court deviates from the guidelines, it must state the Rule 90.3 amount and provide specific findings explaining why that amount is manifestly unjust.

Duration of Child Support

Child support in Alaska generally continues until the child reaches age 18, or until the child turns 19 if still attending high school. Support may also terminate upon the child’s marriage, emancipation, or entry into military service. Alaska does not generally require parents to fund post-secondary education, though the parties may agree to such provisions in their divorce settlement.

Alimony (Spousal Maintenance) in Alaska

Alaska courts may award spousal maintenance under AS 25.24.160. The court considers the financial circumstances of each party and the overall equities of the situation. Alaska recognizes several types of maintenance:

  • Temporary maintenance — Supports a spouse during the pendency of the divorce proceedings.
  • Rehabilitative maintenance — Provides support for a defined period to allow the recipient to obtain education, training, or employment necessary to become self-supporting.
  • Reorientation maintenance — A short-term award to help a spouse adjust to post-divorce financial circumstances.
  • Permanent (long-term) maintenance — Awarded in longer marriages or when the recipient spouse is unable to become self-supporting due to age, health, or other factors.
  • Transitional maintenance — Bridges the gap between the marital standard of living and the anticipated post-divorce financial reality.

The court weighs the length of the marriage, the age and health of each party, the earning capacity and financial condition of each spouse, the conduct of the parties, the property division, the standard of living during the marriage, and the time and expense needed for the recipient to become self-supporting.

The 15% Modification Threshold

Alaska has a specific threshold for determining when a material change of circumstances exists for support modification purposes. Under Civil Rule 90.3(h), a change that results in a 15% or greater difference between the existing support amount and the amount that would be calculated under current circumstances creates a rebuttable presumption that a material change has occurred. This provides a concrete benchmark — unlike many states where “material change” is entirely subjective.

Common grounds for modification include significant changes in income, changes in custody arrangements, changes in the child’s needs, or changes in employment circumstances. Spousal maintenance modification is governed by the same material change standard. Maintenance typically terminates upon the death of either party or the remarriage of the recipient.

Enforcement

Alaska employs a comprehensive set of enforcement mechanisms through the Child Support Services Division (CSSD):

  • Income withholding (wage garnishment)
  • Interception of state and federal tax refunds
  • Garnishment of Permanent Fund Dividends
  • Suspension of driver’s, professional, hunting, and fishing licenses
  • Contempt of court, which may result in fines or incarceration
  • Liens on real and personal property
  • Passport denial for arrearages exceeding $2,500
  • Credit bureau reporting

The PFD garnishment is particularly effective in Alaska because nearly all residents receive the annual dividend, making it a reliable source for intercepting arrearages.

Alaska’s child support calculation under Rule 90.3 and the spousal maintenance framework require careful financial analysis. Whether you are establishing a new support order, seeking a modification, or dealing with enforcement issues, consider scheduling a free consultation with an experienced family law attorney.

Frequently Asked Questions

How is child support calculated in Alaska?

Alaska uses a percentage of income model under Civil Rule 90.3. The non-custodial parent’s adjusted annual income is multiplied by a set percentage based on the number of children: 20% for one child, 27% for two children, and 33% for three children. Gross income includes wages, self-employment income, Permanent Fund Dividends, and all other recurring income, with deductions for taxes, mandatory retirement, and prior child support obligations.

How long does child support last in Alaska?

Child support in Alaska generally continues until the child reaches age 18, or until age 19 if the child is still attending high school. Support also terminates upon the child’s marriage, emancipation, or entry into military service. Alaska does not generally require parents to fund post-secondary education.

How does shared custody affect child support in Alaska?

When the non-custodial parent has the child for more than 30% of overnights (approximately 110 nights per year), Rule 90.3 provides a shared custody adjustment. Each parent’s theoretical support obligation is calculated, and the parent with the higher obligation pays the net difference to the other parent.

What qualifies as a material change for modifying support in Alaska?

Under Civil Rule 90.3(h), a change that results in a 15% or greater difference between the existing support amount and the amount that would be calculated under current circumstances creates a rebuttable presumption that a material change has occurred. Common grounds include significant changes in income, custody arrangements, or the child’s needs.

How does the Permanent Fund Dividend affect child support?

The PFD is included in gross income for child support calculations under Rule 90.3, which means it increases the calculated support amount. Additionally, the Child Support Services Division (CSSD) may garnish a parent’s PFD to satisfy child support arrearages — making it both a calculation factor and an enforcement tool unique to Alaska.

Can child support arrearages be collected from hunting and fishing licenses?

Alaska’s enforcement tools include the suspension of hunting and fishing licenses — in addition to driver’s and professional licenses — for parents who are delinquent on child support. In a state where subsistence hunting and fishing are culturally and economically significant, this enforcement mechanism can be particularly impactful.

How This Guide Was Researched

This guide was developed through a detailed analysis of Alaska Civil Rule 90.3, including the percentage-of-income formula, shared custody adjustment provisions, deviation criteria, and the 15% modification threshold. Spousal maintenance provisions were reviewed under AS 25.24.160 through 25.24.170. Enforcement mechanisms were verified through the Alaska Child Support Services Division (CSSD) publications and AS 25.27. Additional sources included the Alaska Court System’s Rule 90.3 commentary, Alaska Supreme Court decisions on the “manifestly unjust” deviation standard, and the Alaska Bar Association’s family law section resources on PFD garnishment and shared custody calculations.

  • Alaska Civil Rule 90.3 — Child support guidelines, percentage-of-income formula, shared custody adjustment, deviation criteria, and 15% modification threshold
  • AS 25.24.160 through 25.24.170 — Spousal maintenance (alimony) provisions
  • AS 25.27 — Child Support Services Division (CSSD) enforcement authority
  • AS 34.77 — Opt-in community property provisions (relevant to maintenance calculations)
  • Alaska Court System Rule 90.3 commentary and guidelines schedule
  • Alaska CSSD publications on PFD garnishment and enforcement tools

Official Alaska Resources

For more about how we research our guides, see our editorial policy and sources methodology.

Alaska Support Checklist

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Alaska Planning Tools

Use these free tools to estimate costs, calculate support, and prepare for the process.

Official Alaska Resources

Statute reference: AS §§ 25.24.160–25.24.170 (Child Support), AS § 25.24.160 (Spousal Maintenance), Alaska Civil Rule 90.3

Detailed Support Data for Alaska

Child Support
Guidelines
Alaska uses a percentage-based income shares model under Civil Rule 90.3; the non-custodial parent's adjusted annual income is multiplied by a percentage based on the number of children (20% for one child, 27% for two, 33% for three), with adjustments for shared custody arrangements
Deviation factors
  • Especially large prior support obligations to other children
  • Unusually high or low income of the obligor or obligee
  • The prior earning history of a parent who is voluntarily and unreasonably unemployed or underemployed
  • The child's health or educational needs
  • The extent to which the custodial parent's income is affected by the obligation to care for the child
  • Tax consequences
  • Shared custody arrangements where the non-custodial parent has the child more than 30% of overnights
  • Other relevant circumstances
Alimony / Spousal Support
Types
  • Temporary spousal maintenance
  • Rehabilitative spousal maintenance
  • Permanent (long-term) spousal maintenance
  • Reorientation spousal maintenance
  • Transitional spousal maintenance
Factors considered
  • The length of the marriage
  • The station in life and circumstances of the parties
  • The age and health of each party
  • The earning capacity and financial condition of each party
  • The conduct of the parties, including unreasonable depletion of marital assets
  • The property division in the divorce
  • The time and expense necessary for the supported spouse to acquire sufficient education or training
  • The standard of living established during the marriage
  • The availability and cost of health insurance for each party
  • Any other factors the court determines to be relevant
Enforcement
Methods
  • Income withholding
  • Tax refund intercept (state and federal)
  • License suspension (driver, professional, hunting, fishing)
  • Contempt of court
  • Property liens
  • Passport denial
  • Credit bureau reporting
  • Permanent Fund Dividend garnishment
References
Statute
AS §§ 25.24.160–25.24.170 (Child Support), AS § 25.24.160 (Spousal Maintenance), Alaska Civil Rule 90.3
Court Website
https://courts.alaska.gov/shc/family/supportmod.htm
Last Verified
2026-03-01

Common Questions About Support in Alaska

How is child support calculated in Alaska?
Alaska uses a percentage of income model under Civil Rule 90.3. The non-custodial parent's adjusted annual income is multiplied by a set percentage based on the number of children: 20% for one child, 27% for two children, and 33% for three children. Gross income includes wages, self-employment income, Permanent Fund Dividends, and all other recurring income, with deductions for taxes, mandatory retirement, and prior child support obligations.
How long does child support last in Alaska?
Child support in Alaska generally continues until the child reaches age 18, or until age 19 if the child is still attending high school. Support also terminates upon the child's marriage, emancipation, or entry into military service. Alaska does not generally require parents to fund post-secondary education.
How does shared custody affect child support in Alaska?
When the non-custodial parent has the child for more than 30% of overnights (approximately 110 nights per year), Rule 90.3 provides a shared custody adjustment. Each parent's theoretical support obligation is calculated, and the parent with the higher obligation pays the net difference to the other parent.
What qualifies as a material change for modifying support in Alaska?
Under Civil Rule 90.3(h), a change that results in a 15% or greater difference between the existing support amount and the amount that would be calculated under current circumstances creates a rebuttable presumption that a material change has occurred. Common grounds include significant changes in income, custody arrangements, or the child's needs.
How does the Permanent Fund Dividend affect child support?
The PFD is included in gross income for child support calculations under Rule 90.3, which means it increases the calculated support amount. Additionally, the Child Support Services Division (CSSD) may garnish a parent's PFD to satisfy child support arrearages — making it both a calculation factor and an enforcement tool unique to Alaska.
Can child support arrearages be collected from hunting and fishing licenses?
Alaska's enforcement tools include the suspension of hunting and fishing licenses — in addition to driver's and professional licenses — for parents who are delinquent on child support. In a state where subsistence hunting and fishing are culturally and economically significant, this enforcement mechanism can be particularly impactful.

Last updated: March 2026. This guide summarizes general legal information based on publicly available sources and is provided for educational purposes only. It does not constitute legal advice. For advice specific to your situation, consult a licensed attorney in your state.